CN215840918U - Blood transfusion filter - Google Patents
Blood transfusion filter Download PDFInfo
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- CN215840918U CN215840918U CN202121949906.XU CN202121949906U CN215840918U CN 215840918 U CN215840918 U CN 215840918U CN 202121949906 U CN202121949906 U CN 202121949906U CN 215840918 U CN215840918 U CN 215840918U
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Abstract
The utility model discloses a blood transfusion filter, which comprises a shell, wherein an adsorption space and a filtering space are sequentially arranged in the shell from top to bottom, an adsorbent is filled in the adsorption space, a filtering component is arranged in the filtering space, a liquid inlet is arranged at the top side of the shell, a liquid outlet is arranged at the bottom side of the shell, and fluid enters the shell from the liquid inlet, sequentially passes through the adsorption space and the filtering space and then flows out from the liquid outlet.
Description
Technical Field
The utility model relates to a medical apparatus, in particular to a blood transfusion filter.
Background
Blood transfusion is an irreplaceable means for treating diseases and rescuing patients, and is widely applied clinically. At present, the blood filter screen in the existing blood transfusion filter has the pore diameter of (200 +/-20) mu m, only can filter the micro-polymer particles with the particle diameter of (200 +/-20) mu m or more, but cannot filter foreign matters with the particle diameter of 20 mu m or more, however, part of foreign body biological active substances such as plasma protein, cell factors and the like exist in the stored blood even though the white blood cells are removed, the substances can cause adverse reactions such as allergy, fever and the like of patients, moreover, the blood can form blood cell fragments, and micro-polymer particles (larger than 20 mu m) with different sizes such as denatured protein, fibrin and the like in the storage process, and the particulate substances can easily block the pulmonary circulation capillary vessels to cause acute respiratory distress syndrome. In addition, the blood can not completely avoid bacterial or endotoxin pollution in the collection and preparation process, the blood transfusion adverse reaction caused by bacterial pollution or endotoxin pollution of the blood is non-immune blood transfusion reaction, and the adverse effects of fever, cold tremor, hypotension and shock can be generated to a human body, and even the serious consequences of tissue damage and death are caused.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a transfusion filter that solves one or more of the problems of the prior art and provides at least one of the advantages of the present invention.
The solution of the utility model for solving the technical problem is as follows:
the utility model provides a blood transfusion filter, includes the casing, by having adsorption space and the filter space that sets gradually from top to bottom in the casing, the adsorbent is equipped with in the adsorption space, be provided with filter assembly in the filter space, the top side of casing is provided with the inlet, the bottom side of casing is provided with the liquid outlet, and fluid follows the inlet gets into in the casing and pass in proper order adsorption space follow behind the filter space the liquid outlet flows.
The technical scheme at least has the following beneficial effects: the blood to be infused can enter the adsorption space from the liquid inlet, harmful substances such as endotoxin, plasma protein, cell factors and the like can be adsorbed by the adsorbent in the adsorption space, then enters the filtering space, passes through the filtering component, the micro-polymer particles are intercepted by the filtering component, and the blood in the purification space can be discharged from the liquid outlet after being adsorbed and filtered, so that the harmful substances can be effectively removed, and then the blood is infused into the patient, and the blood transfusion safety is improved.
As the further improvement of above-mentioned technical scheme, filter screen frame and lower filter screen frame have set gradually from top to bottom in the casing, go up filter screen frame with form down between the filter screen frame the adsorption space, filter screen frame with form down between the inner bottom wall of casing filter space, be provided with filter assembly in the filter space, filter assembly with enclose between the inner bottom wall of casing and be equipped with purification space, the inlet is located go up filter screen frame's top, the diapire of casing just right purification space's position is provided with the liquid outlet. In the casing, utilize filter net rack and filter net rack down and separate the inner space, the adsorbent is filled in the adsorption space that last filter net rack and filter net rack formed down, and filter assembly then sets up in the filtration space that forms between filter net rack and the casing internal wall down for fluid flows from the liquid outlet after getting into the casing from the inlet and passing adsorption space, filtration space, purification space in proper order.
As a further improvement of the above technical solution, the lower filter screen frame includes a second annular outer frame, a second support rib and a second filter screen, the second filter screen and the second support rib are both connected to an inner side wall of the second annular outer frame, the second support rib is located on a top side or a bottom side of the second filter screen, the inner side wall of the housing is provided with a second support plate, and the second annular outer frame is disposed on the top side of the second support plate. First filter screen and first support muscle are all connected in first annular frame, and when first filter screen received the adsorbent and pushed down, can be supported by first support muscle, avoid the excessive recessed deformation of first filter screen, and first annular frame then can be placed on first layer board to realize relatively fixed.
As a further improvement of the above technical solution, the upper filter screen frame includes a second annular outer frame, a second support rib and a second filter screen, the second filter screen and the second support rib are both connected to an inner side wall of the second annular outer frame, the second support rib is located on a top side or a bottom side of the second filter screen, a second support plate is disposed on an inner side wall of the housing, and the second annular outer frame is disposed on a top side of the second support plate. Similarly, the second filter screen and the second support rib are connected in the second annular outer frame, and when the second filter screen is pressed down by the adsorbent, the second filter screen can be supported by the second support rib, so that the second filter screen is prevented from excessively sinking and deforming, and the second annular outer frame can be placed on the second support plate, so that relative fixation is realized.
As a further improvement of the above technical scheme, the casing includes upper end cover, barrel and base, upper end cover detachably connect in the top of barrel, base detachably connect in the bottom of barrel, go up the filter screen frame with the lower filter screen frame all set up in the barrel, the inlet set up in on the upper end cover, the liquid outlet set up in on the base. The shell is divided into an upper end cover, a barrel body and a base which can be mutually disassembled, the upper end cover can be disassembled from the barrel body, then the adsorbent is added into the barrel body, or the upper filter screen frame and the lower filter screen frame are taken out from the barrel body, and the whole assembly and disassembly are more convenient.
As a further improvement of the above technical solution, the filter assembly includes a double-layer filter screen and a cover plate, the two side edges of the double-layer filter screen are connected with each other and bent to form a purification channel penetrating from top to bottom, the cover plate is connected to the top side of the double-layer filter screen, the cover plate seals the top end of the purification channel, the bottom side of the double-layer filter screen is connected to the inner bottom wall of the casing, and the cover plate, the double-layer filter screen and the inner bottom wall of the casing are enclosed to form the purification space. The two side edges of the double-layer filter screen are mutually connected and bent to form a purifying channel, the top end of the purifying channel is plugged by the cover plate, the bottom end of the purifying channel is plugged by the inner bottom wall of the shell, and blood in the filtering space passes through the double-layer filter screen to be filtered and then enters the purifying channel.
As a further improvement of the above technical solution, the double-layer filter screen includes a coarse screen and a fine screen, the aperture of the coarse screen is larger than the aperture of the fine screen, the coarse screen is folded into a polygonal star shape, the fine screen is located in the coarse screen, and the fine screen and the coarse screen have the same shape. The coarse mesh is larger in aperture than the fine mesh, and similarly, the fine mesh is smaller in aperture than the coarse mesh, the coarse mesh surrounds the fine mesh, and the fine mesh is folded to form a polygonal star shape having a plurality of corners, and the fine mesh has the same shape as the coarse mesh, so that the filtering area of the double-layer filtering net is increased, thereby improving the filtering effect.
As a further improvement of the technical scheme, the liquid outlet is connected with a blood transfusion tube, and one end of the blood transfusion tube, which is far away from the liquid outlet, is connected with a Ruhr locking joint. The blood transfusion tube is provided with a luer locking joint, so that the operation and the use are convenient.
As a further improvement of the technical proposal, the blood transfusion tube is provided with a flow stopping clip. The blood flow on-off in the blood transfusion catheter can be conveniently controlled by the flow stopping clip.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the utility model, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a top view of the double layer filter screen of the present invention.
In the drawings: 110-upper end cover, 120-cylinder, 121-first supporting plate, 122-second supporting plate, 130-base, 200-upper filter screen frame, 300-lower filter screen frame, 410-double-layer filter screen, 420-cover plate, 510-blood transfusion tube, 520-luer locking joint and 530-flow stopping clip.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. All technical characteristics in the utility model can be interactively combined on the premise of not conflicting with each other.
Referring to fig. 1, a blood transfusion filter, includes the casing, by having adsorption space and the filtration space that sets gradually from top to bottom in the casing, the adsorbent is equipped with in the adsorption space, be provided with filter assembly in the filtration space, the top side of casing is provided with the inlet, the bottom side of casing is provided with the liquid outlet, and fluid follows the inlet gets into in the casing and pass in proper order adsorption space follow behind the filtration space the liquid outlet flows.
Therefore, blood to be input can enter the adsorption space from the liquid inlet, harmful substances such as endotoxin, plasma protein and cytokines can be adsorbed by the adsorbent in the adsorption space, then the blood enters the filtering space, passes through the filtering component, the micro-polymer particles are intercepted by the filtering component, and the blood in the purifying space can be discharged from the liquid outlet after being adsorbed and filtered, so that the harmful substances can be effectively removed and then the blood is input into a patient body, and the blood transfusion safety is improved.
As further structural embodiment in the casing, filter net rack 200 and lower filter net rack 300 have set gradually in the casing from top to bottom, go up filter net rack 200 with form down between the filter net rack 300 the adsorption space, filter net rack 300 with form down between the inner bottom wall of casing filter space, be provided with filter assembly in the filter space, filter assembly with enclose between the inner bottom wall of casing and be equipped with the purification space, the inlet is located go up filter net rack 200's top, the diapire of casing is just right the position of purification space is provided with the liquid outlet. In the casing, utilize last filter screen frame 200 and filter screen frame 300 to separate the inner space down, the adsorbent is filled in the adsorption space that last filter screen frame 200 and filter screen frame 300 formed down, and filter assembly then sets up in the filtration space that forms between filter screen frame 300 and the casing internal wall down for fluid flows from the liquid outlet after passing adsorption space, filtration space, clean room in proper order in getting into the casing from the inlet.
Lower filter screen frame 300 mainly used carries out the separation to the adsorbent, avoids the adsorbent to drop in the filtration space, in this embodiment, lower filter screen frame 300 includes second annular frame, second brace rod and second filter screen the second filter screen with the second brace rod all connect in the inside wall of second annular frame, the second brace rod is located the top side or the bottom side of second filter screen, the inside wall of casing is provided with second layer board 122, second annular frame set up in the top side of second layer board 122. First filter screen and first support muscle are all connected in first annular frame, and when first filter screen received the adsorbent and pushed down, can be supported by first support muscle, avoid the excessive recessed deformation of first filter screen, and first annular frame then can be placed on first layer board 121 to realize relatively fixed.
Go up filter screen frame 200 mainly used prevents that the adsorbent from floating up to the inlet, in this embodiment, it includes second annular frame, second brace rod and second filter screen to go up filter screen frame 200 the second filter screen with the second brace rod all connect in the inside wall of second annular frame, the second brace rod is located the top side or the bottom side of second filter screen, the inside wall of casing is provided with second layer board 122, second annular frame set up in the top side of second layer board 122. Similarly, the second filter screen and the second support rib are both connected in the second annular outer frame, and when the second filter screen is pressed down by the adsorbent, the second filter screen can be supported by the second support rib, so that the second filter screen is prevented from excessively sinking and deforming, and the second annular outer frame can be placed on the second supporting plate 122, so that relative fixation is realized.
Have absorption, filtration in the casing, in order to make things convenient for to carry out the dismouting to whole, in this embodiment, the casing includes upper end cover 110, barrel 120 and base 130, upper end cover 110 detachably connect in the top of barrel 120, base 130 detachably connect in the bottom of barrel 120, go up filter screen rack 200 with lower filter screen rack 300 all set up in the barrel 120, the inlet set up in on the upper end cover 110, the liquid outlet set up in on the base 130. The housing is divided into an upper end cover 110, a cylinder 120 and a base 130 which can be disassembled mutually, the upper end cover 110 can be disassembled from the cylinder 120, then the adsorbent is added into the cylinder 120, or the upper filter screen frame 200 and the lower filter screen frame 300 are taken out from the cylinder 120, and the whole assembly and disassembly are more convenient.
The filtering component is mainly used for filtering blood after adsorption, in the above embodiment, can be directly enclosed in the liquid outlet for a filter screen, and in this embodiment, the filtering component includes double-deck filter screen 410 and apron 420, the both sides limit interconnect of double-deck filter screen 410 and bending type become the purification passageway that runs through from top to bottom, apron 420 connect in the top side of double-deck filter screen 410, apron 420 seals the person the top of purification passageway, the bottom side of double-deck filter screen 410 connect in the inner bottom wall of casing, apron 420 double-deck filter screen 410 with enclose between the inner bottom wall of casing and become the purification space. The two sides of the double-layer filter screen 410 are connected with each other and bent to form a purification channel, the cover plate 420 is used for plugging the top end of the purification channel, the bottom end of the purification channel is plugged by the inner bottom wall of the shell, and blood in the filtering space passes through the double-layer filter screen 410 to be filtered and then enters the purification channel.
As a further example of the structure of the double-layered filter screen 410, as shown in fig. 2, the double-layered filter screen 410 includes a coarse screen and a fine screen, the coarse screen has a larger pore size than the fine screen, the coarse screen is folded into a polygonal star shape, the fine screen is located within the coarse screen, and the fine screen and the coarse screen have the same shape. The coarse mesh means a mesh having a larger aperture than the fine mesh, and similarly, the fine mesh means a mesh having a smaller aperture than the coarse mesh, the coarse mesh enclosing the fine mesh and being folded to form a polygonal star shape having a plurality of corners, and the fine mesh having the same shape increases the filtering area of the double-layer filtering net 410, thereby enhancing the filtering effect.
In some embodiments, a blood tube 510 is connected to the liquid outlet, and a luer lock fitting 520 is connected to an end of the blood tube 510 distal to the liquid outlet. The blood transfusion tube 510 is provided with a luer locking connector 520, which is convenient for operation and use.
In some embodiments, a flow stop clip 530 is disposed on the blood line 510. The flow stop clip 530 can be used to control the blood flow in the blood tube 510.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the utility model as set forth in the claims appended hereto.
Claims (9)
1. A blood transfusion filter, characterized in that: the filter comprises a housing, by having adsorption space and the filter space that sets gradually from top to bottom in the casing, the adsorbent is equipped with in the adsorption space, be provided with filter assembly in the filter space, the top side of casing is provided with the inlet, the bottom side of casing is provided with the liquid outlet, and the fluid is followed the inlet gets into in the casing and pass in proper order the adsorption space follow behind the filter space the liquid outlet flows.
2. A transfusion filter according to claim 1, characterized in that: filter screen frame (200) and lower filter screen frame (300) have set gradually from top to bottom in the casing, go up filter screen frame (200) with form down between filter screen frame (300) the adsorption space, down filter screen frame (300) with form between the inner bottom wall of casing the filtration space, be provided with filter assembly in the filtration space, filter assembly with enclose between the inner bottom wall of casing and be equipped with purification space, the inlet is located go up the top of filter screen frame (200), the diapire of casing is just right the position in purification space is provided with the liquid outlet.
3. A transfusion filter according to claim 2, characterized in that: lower filter screen frame (300) include first annular frame, first support muscle and first filter screen with first support muscle all connect in the inside wall of first annular frame, first support muscle is located the top side or the bottom side of first filter screen, the inside wall of casing is provided with first layer board (121), first annular frame set up in the top side of first layer board (121).
4. A transfusion filter according to claim 2, characterized in that: go up filter screen frame (200) and include second annular frame, second brace rod and second filter screen the second filter screen with the second brace rod all connect in the inside wall of second annular frame, the second brace rod is located the top side or the bottom side of second filter screen, the inside wall of casing is provided with second layer board (122), second annular frame set up in the top side of second layer board (122).
5. A transfusion filter according to claim 2, characterized in that: the casing includes upper end cover (110), barrel (120) and base (130), upper end cover (110) detachably connect in the top of barrel (120), base (130) detachably connect in the bottom of barrel (120), go up filter screen frame (200) with lower filter screen frame (300) all set up in barrel (120), the inlet set up in on upper end cover (110), the liquid outlet set up in on base (130).
6. A transfusion filter according to claim 2, characterized in that: the filter assembly comprises a double-layer filter screen (410) and a cover plate (420), two side edges of the double-layer filter screen (410) are connected with each other and bent to form a purification channel which runs through from top to bottom, the cover plate (420) is connected with the top side of the double-layer filter screen (410), the cover plate (420) seals the top end of the purification channel, the bottom side of the double-layer filter screen (410) is connected with the inner bottom wall of the shell, and the cover plate (420) is connected with the inner bottom wall of the shell in a surrounding mode to form the purification space.
7. A transfusion filter according to claim 6, characterized in that: the double-layer filter screen (410) comprises a coarse screen and a fine screen, the aperture of the coarse screen is larger than that of the fine screen, the coarse screen is folded into a multi-angular star shape, the fine screen is positioned in the coarse screen, and the fine screen and the coarse screen are in the same shape.
8. A transfusion filter according to claim 1, characterized in that: the liquid outlet is connected with a blood transfusion pipe (510), and one end of the blood transfusion pipe (510) far away from the liquid outlet is connected with a luer locking joint (520).
9. A transfusion filter according to claim 8, characterized in that: the blood transfusion tube (510) is provided with a flow stopping clip (530).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121949906.XU CN215840918U (en) | 2021-08-18 | 2021-08-18 | Blood transfusion filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121949906.XU CN215840918U (en) | 2021-08-18 | 2021-08-18 | Blood transfusion filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215840918U true CN215840918U (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121949906.XU Active CN215840918U (en) | 2021-08-18 | 2021-08-18 | Blood transfusion filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215840918U (en) |
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2021
- 2021-08-18 CN CN202121949906.XU patent/CN215840918U/en active Active
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